package com.cxd.springcloud.controller;

import com.cxd.springcloud.entities.Payment;
import com.cxd.springcloud.mylb.LoadBalancer;
import com.cxd.springcloud.vo.CommonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@Slf4j
@RestController
public class OrderController {

//    public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-EUREKA-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> createPayment(Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment,CommonResult.class);
    }


    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable("id")Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/"+id, CommonResult.class);
    }

    @GetMapping("/consumer/PaymentEntity/get/{id}")
    public CommonResult<Payment> getPaymentEntityById(@PathVariable("id")Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        } else {
            return new CommonResult("444", "操作失败");
        }

    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLb() {
        List<ServiceInstance> instances = discoveryClient.getInstances("cloud-eureka-payment-service");
        if (null == instances || instances.isEmpty()) {
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri + "/payment/lb", String.class);
    }

    @GetMapping("/consumer/payment/zipkin")
    public String zipkin() {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/zipkin", String.class);
    }
}
